Overview
The ZF 4657.185.057 ACCESSORIES component is a critical OEM genuine part engineered specifically for the WG210 series transmission. This accessory assembly functions as a mounting and sealing interface within the transmission’s rear housing section, ensuring proper alignment and oil containment during high-torque operations. As a factory-specified replacement, the SKU 4657.185.057 directly supports the structural integrity of the gear train by securing adjacent housing elements. It is typically installed alongside the 4657101082: TRANSMISSION HOUSING and the 4657201166: HOUS.FRONT SECT to form a leak-proof assembly. This part is indispensable for maintaining the precise tolerances required in heavy-duty ZF transmissions.
Symptoms of Failure
- Oil seepage at rear housing joint: When the 4657.185.057 accessory wears or cracks, transmission fluid may escape near the rear section, leading to low oil levels and overheating.
- Gear engagement hesitation: A degraded accessory can cause misalignment of the 4657201170: HOUSING REAR PART, resulting in delayed or rough shifting under load.
- Unusual metallic rattling from bell housing area: Loose or broken mounting points within this accessory allow vibration between the 4657298102: HOUSING REAR SECTION and the main case, producing audible noise during acceleration.
- Intermittent loss of drive pressure: A compromised seal in this accessory can reduce hydraulic pressure, causing the transmission to slip intermittently in higher gears.
Technical Specifications
| Specification | Value |
|---|---|
| OEM Part Number | 4657.185.057 |
| Material | Die-cast aluminum alloy with steel inserts |
| Weight | 0.85 kg (1.87 lbs) |
| Dimensions (L x W x H) | 210 mm x 85 mm x 45 mm |
| Surface Finish | Anodized corrosion-resistant coating |
| OEM Reference | ZF 4657.185.057 |
Compatibility
This accessory is primarily designed for the ZF WG210 series transmission, but it also fits select models in the WG180, WG200, and WG220 families due to shared housing architecture. It is a direct replacement for units built between 2008 and 2022. For proper fitment, verify that your transmission’s rear housing section matches the mounting pattern of the 4657.185.057. Always pair this part with the 4657101082: TRANSMISSION HOUSING and the 4657201166: HOUS.FRONT SECT to ensure structural alignment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101082 | TRANSMISSION HOUSING | Main structural case for gear assembly |
| 4657201166 | HOUS.FRONT SECT | Front housing section for input shaft support |
| 4657201170 | HOUSING REAR PART | Rear housing segment for output bearing |
| 4657298102 | HOUSING REAR SECTION | Complete rear housing unit with seal grooves |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing mating surfaces |
| 0636100801 | CAP SCREW | Fastener for securing housing sections |
| 4656301148 | FIXING PLATE | Bracket to lock accessory in position |
| 4657301032 | SCREEN SHEET | Fine mesh filter for oil debris |
| 4657301033 | SCREEN SHEET | Secondary filter screen for hydraulic circuit |
| 0636100803 | CAP SCREW | High-tensile bolt for rear housing |
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